Since 1999, Microsoft’s held a puzzle hunt at its campuses that take place throughout an entire weekend and encourage teams to solve puzzles to find a hidden prize. Every year introduces a new theme and change of location.Image via Complex Original[via]Sign up for the Complex Newsletter for breaking news, events, and unique stories.SubscribeListsBill GatesMicrosoftOfficershipSteve BallmerTechWindowsShare This StoryPrevious SlideNext Slide